New Neotropical Tabanidae (Diptera). III. 
Notes on three rare species of Diachlorini in Mexico with 
descriptions of Neallotypes for two 
Cornelius B. Philip 
Research Associate, California Academy of Sciences, San Francisco 94118 
Despite increasing collection of Tabanidae in various parts of 
Mexico, certain distinctive elements among the Tribe Diachlorini 
remain seldom taken and inadequately known. The present report 
provides new information on three such species, recently described 
from Chihuahua to Chiapas, and describes neallotypes for two of 
them from other states. 
Bolbodimyia lampros Philip and Floyd 
Until the specimen described below was provided through cour¬ 
tesy of Dr. W. W. Middlekauff of the University of California, Berkeley, 
the type male of this striking species remained the only known speci¬ 
men. Fortunately the former supplies information on the previously 
unknown female, and confirmatory diagnostic characters. 
Neallotype female. Length 13 mm, a little shorter than the type male. Otherwise, and 
except for the usual sexual differences, this is tinctorially in good agreement with the 
type from Chihuahua, considerably to the north and inland from the locality of the 
present specimen. The original speculation that the bright (like a “Jack-O-Lantern”), 
entirely orange abdomen might suggest a possibly sexually dichromatic species is thus 
eliminated, and this distinctive character precludes running lampros in Stone’s (1954) key 
to other species of the Neotropical genus, though B. celeroides Stone from Colombia 
does have an entirely orange venter. The name thus aptly applies to the bright, almost 
luminous orange abdomen in contrast to the predominantly dark notum and wings in both 
sexes. 
The neallotype female also otherwise has the same basic coloration of blackish body, 
legs and wings, orange face, genae and beard, plus orange hair patches on pre-alar lobes 
and upper pleura as in the type male. The shiny black antennal scapes are more swollen 
below, bases of reddish plates a little wider, dark palpi longer, and dorsum of abdomen 
predominantly orange-haired. Frons gently divergent below, index about 1:2, a rather 
broad, lanceolate, black median callus and black boss at vertex without ocelli, flanked on 
sides by gray pollenosity, basal callosity shining black, a little broader than tall, some¬ 
what swollen in profile, below which the shining black subcallus is strongly protuberant 
to bases of antennae. The hyaline apical crescents are reduced in the blackish wings 
about as in the male, but all tibiae appear a little more swollen. 
Locality. — Mexico: Jalisco, Guadalajara, 4.iv.72, E.A. Kane and B. Villegas. In Califor¬ 
nia Academy of Sciences, No. 13037, on permanent deposit from University of California, 
Berkeley. 
The same features by which Tidwell and Philip (1977) differentiated 
their newly described B. bermudezi from the type male, will also dis¬ 
tinguish the females, namely (in lampros), the more reddish antennal 
flagellum, the pre-alar thoracic hair patches orange and extending 
onto upper pleura, entirely orange abdomen and wing infuscation not 
restricted to a costal band; in addition, the eyes are not obviously 
hairy, and the median callus of the female frons is more restricted. 
The Pan-Pacific Entomologist 54:11-13. January 1978 
